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Diffstat (limited to 'src/com/android/launcher3/FocusHelper.java')
| -rw-r--r-- | src/com/android/launcher3/FocusHelper.java | 898 |
1 files changed, 898 insertions, 0 deletions
diff --git a/src/com/android/launcher3/FocusHelper.java b/src/com/android/launcher3/FocusHelper.java new file mode 100644 index 000000000..94c5820ce --- /dev/null +++ b/src/com/android/launcher3/FocusHelper.java @@ -0,0 +1,898 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.launcher3; + +import android.content.res.Configuration; +import android.view.KeyEvent; +import android.view.View; +import android.view.ViewGroup; +import android.view.ViewParent; +import android.widget.TabHost; +import android.widget.TabWidget; + +import com.android.launcher3.R; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.Comparator; + +/** + * A keyboard listener we set on all the workspace icons. + */ +class IconKeyEventListener implements View.OnKeyListener { + public boolean onKey(View v, int keyCode, KeyEvent event) { + return FocusHelper.handleIconKeyEvent(v, keyCode, event); + } +} + +/** + * A keyboard listener we set on all the workspace icons. + */ +class FolderKeyEventListener implements View.OnKeyListener { + public boolean onKey(View v, int keyCode, KeyEvent event) { + return FocusHelper.handleFolderKeyEvent(v, keyCode, event); + } +} + +/** + * A keyboard listener we set on all the hotseat buttons. + */ +class HotseatIconKeyEventListener implements View.OnKeyListener { + public boolean onKey(View v, int keyCode, KeyEvent event) { + final Configuration configuration = v.getResources().getConfiguration(); + return FocusHelper.handleHotseatButtonKeyEvent(v, keyCode, event, configuration.orientation); + } +} + +/** + * A keyboard listener we set on the last tab button in AppsCustomize to jump to then + * market icon and vice versa. + */ +class AppsCustomizeTabKeyEventListener implements View.OnKeyListener { + public boolean onKey(View v, int keyCode, KeyEvent event) { + return FocusHelper.handleAppsCustomizeTabKeyEvent(v, keyCode, event); + } +} + +public class FocusHelper { + /** + * Private helper to get the parent TabHost in the view hiearchy. + */ + private static TabHost findTabHostParent(View v) { + ViewParent p = v.getParent(); + while (p != null && !(p instanceof TabHost)) { + p = p.getParent(); + } + return (TabHost) p; + } + + /** + * Handles key events in a AppsCustomize tab between the last tab view and the shop button. + */ + static boolean handleAppsCustomizeTabKeyEvent(View v, int keyCode, KeyEvent e) { + final TabHost tabHost = findTabHostParent(v); + final ViewGroup contents = tabHost.getTabContentView(); + final View shop = tabHost.findViewById(R.id.market_button); + + final int action = e.getAction(); + final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP); + boolean wasHandled = false; + switch (keyCode) { + case KeyEvent.KEYCODE_DPAD_RIGHT: + if (handleKeyEvent) { + // Select the shop button if we aren't on it + if (v != shop) { + shop.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_DOWN: + if (handleKeyEvent) { + // Select the content view (down is handled by the tab key handler otherwise) + if (v == shop) { + contents.requestFocus(); + wasHandled = true; + } + } + break; + default: break; + } + return wasHandled; + } + + /** + * Returns the Viewgroup containing page contents for the page at the index specified. + */ + private static ViewGroup getAppsCustomizePage(ViewGroup container, int index) { + ViewGroup page = (ViewGroup) ((PagedView) container).getPageAt(index); + if (page instanceof PagedViewCellLayout) { + // There are two layers, a PagedViewCellLayout and PagedViewCellLayoutChildren + page = (ViewGroup) page.getChildAt(0); + } + return page; + } + + /** + * Handles key events in a PageViewExtendedLayout containing PagedViewWidgets. + */ + static boolean handlePagedViewGridLayoutWidgetKeyEvent(PagedViewWidget w, int keyCode, + KeyEvent e) { + + final PagedViewGridLayout parent = (PagedViewGridLayout) w.getParent(); + final PagedView container = (PagedView) parent.getParent(); + final TabHost tabHost = findTabHostParent(container); + final TabWidget tabs = tabHost.getTabWidget(); + final int widgetIndex = parent.indexOfChild(w); + final int widgetCount = parent.getChildCount(); + final int pageIndex = ((PagedView) container).indexToPage(container.indexOfChild(parent)); + final int pageCount = container.getChildCount(); + final int cellCountX = parent.getCellCountX(); + final int cellCountY = parent.getCellCountY(); + final int x = widgetIndex % cellCountX; + final int y = widgetIndex / cellCountX; + + final int action = e.getAction(); + final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP); + ViewGroup newParent = null; + // Now that we load items in the bg asynchronously, we can't just focus + // child siblings willy-nilly + View child = null; + boolean wasHandled = false; + switch (keyCode) { + case KeyEvent.KEYCODE_DPAD_LEFT: + if (handleKeyEvent) { + // Select the previous widget or the last widget on the previous page + if (widgetIndex > 0) { + parent.getChildAt(widgetIndex - 1).requestFocus(); + } else { + if (pageIndex > 0) { + newParent = getAppsCustomizePage(container, pageIndex - 1); + if (newParent != null) { + child = newParent.getChildAt(newParent.getChildCount() - 1); + if (child != null) child.requestFocus(); + } + } + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_RIGHT: + if (handleKeyEvent) { + // Select the next widget or the first widget on the next page + if (widgetIndex < (widgetCount - 1)) { + parent.getChildAt(widgetIndex + 1).requestFocus(); + } else { + if (pageIndex < (pageCount - 1)) { + newParent = getAppsCustomizePage(container, pageIndex + 1); + if (newParent != null) { + child = newParent.getChildAt(0); + if (child != null) child.requestFocus(); + } + } + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_UP: + if (handleKeyEvent) { + // Select the closest icon in the previous row, otherwise select the tab bar + if (y > 0) { + int newWidgetIndex = ((y - 1) * cellCountX) + x; + child = parent.getChildAt(newWidgetIndex); + if (child != null) child.requestFocus(); + } else { + tabs.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_DOWN: + if (handleKeyEvent) { + // Select the closest icon in the previous row, otherwise do nothing + if (y < (cellCountY - 1)) { + int newWidgetIndex = Math.min(widgetCount - 1, ((y + 1) * cellCountX) + x); + child = parent.getChildAt(newWidgetIndex); + if (child != null) child.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_ENTER: + case KeyEvent.KEYCODE_DPAD_CENTER: + if (handleKeyEvent) { + // Simulate a click on the widget + View.OnClickListener clickListener = (View.OnClickListener) container; + clickListener.onClick(w); + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_PAGE_UP: + if (handleKeyEvent) { + // Select the first item on the previous page, or the first item on this page + // if there is no previous page + if (pageIndex > 0) { + newParent = getAppsCustomizePage(container, pageIndex - 1); + if (newParent != null) { + child = newParent.getChildAt(0); + } + } else { + child = parent.getChildAt(0); + } + if (child != null) child.requestFocus(); + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_PAGE_DOWN: + if (handleKeyEvent) { + // Select the first item on the next page, or the last item on this page + // if there is no next page + if (pageIndex < (pageCount - 1)) { + newParent = getAppsCustomizePage(container, pageIndex + 1); + if (newParent != null) { + child = newParent.getChildAt(0); + } + } else { + child = parent.getChildAt(widgetCount - 1); + } + if (child != null) child.requestFocus(); + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_MOVE_HOME: + if (handleKeyEvent) { + // Select the first item on this page + child = parent.getChildAt(0); + if (child != null) child.requestFocus(); + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_MOVE_END: + if (handleKeyEvent) { + // Select the last item on this page + parent.getChildAt(widgetCount - 1).requestFocus(); + } + wasHandled = true; + break; + default: break; + } + return wasHandled; + } + + /** + * Handles key events in a PageViewCellLayout containing PagedViewIcons. + */ + static boolean handleAppsCustomizeKeyEvent(View v, int keyCode, KeyEvent e) { + ViewGroup parentLayout; + ViewGroup itemContainer; + int countX; + int countY; + if (v.getParent() instanceof PagedViewCellLayoutChildren) { + itemContainer = (ViewGroup) v.getParent(); + parentLayout = (ViewGroup) itemContainer.getParent(); + countX = ((PagedViewCellLayout) parentLayout).getCellCountX(); + countY = ((PagedViewCellLayout) parentLayout).getCellCountY(); + } else { + itemContainer = parentLayout = (ViewGroup) v.getParent(); + countX = ((PagedViewGridLayout) parentLayout).getCellCountX(); + countY = ((PagedViewGridLayout) parentLayout).getCellCountY(); + } + + // Note we have an extra parent because of the + // PagedViewCellLayout/PagedViewCellLayoutChildren relationship + final PagedView container = (PagedView) parentLayout.getParent(); + final TabHost tabHost = findTabHostParent(container); + final TabWidget tabs = tabHost.getTabWidget(); + final int iconIndex = itemContainer.indexOfChild(v); + final int itemCount = itemContainer.getChildCount(); + final int pageIndex = ((PagedView) container).indexToPage(container.indexOfChild(parentLayout)); + final int pageCount = container.getChildCount(); + + final int x = iconIndex % countX; + final int y = iconIndex / countX; + + final int action = e.getAction(); + final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP); + ViewGroup newParent = null; + // Side pages do not always load synchronously, so check before focusing child siblings + // willy-nilly + View child = null; + boolean wasHandled = false; + switch (keyCode) { + case KeyEvent.KEYCODE_DPAD_LEFT: + if (handleKeyEvent) { + // Select the previous icon or the last icon on the previous page + if (iconIndex > 0) { + itemContainer.getChildAt(iconIndex - 1).requestFocus(); + } else { + if (pageIndex > 0) { + newParent = getAppsCustomizePage(container, pageIndex - 1); + if (newParent != null) { + container.snapToPage(pageIndex - 1); + child = newParent.getChildAt(newParent.getChildCount() - 1); + if (child != null) child.requestFocus(); + } + } + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_RIGHT: + if (handleKeyEvent) { + // Select the next icon or the first icon on the next page + if (iconIndex < (itemCount - 1)) { + itemContainer.getChildAt(iconIndex + 1).requestFocus(); + } else { + if (pageIndex < (pageCount - 1)) { + newParent = getAppsCustomizePage(container, pageIndex + 1); + if (newParent != null) { + container.snapToPage(pageIndex + 1); + child = newParent.getChildAt(0); + if (child != null) child.requestFocus(); + } + } + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_UP: + if (handleKeyEvent) { + // Select the closest icon in the previous row, otherwise select the tab bar + if (y > 0) { + int newiconIndex = ((y - 1) * countX) + x; + itemContainer.getChildAt(newiconIndex).requestFocus(); + } else { + tabs.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_DOWN: + if (handleKeyEvent) { + // Select the closest icon in the previous row, otherwise do nothing + if (y < (countY - 1)) { + int newiconIndex = Math.min(itemCount - 1, ((y + 1) * countX) + x); + itemContainer.getChildAt(newiconIndex).requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_ENTER: + case KeyEvent.KEYCODE_DPAD_CENTER: + if (handleKeyEvent) { + // Simulate a click on the icon + View.OnClickListener clickListener = (View.OnClickListener) container; + clickListener.onClick(v); + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_PAGE_UP: + if (handleKeyEvent) { + // Select the first icon on the previous page, or the first icon on this page + // if there is no previous page + if (pageIndex > 0) { + newParent = getAppsCustomizePage(container, pageIndex - 1); + if (newParent != null) { + container.snapToPage(pageIndex - 1); + child = newParent.getChildAt(0); + if (child != null) child.requestFocus(); + } + } else { + itemContainer.getChildAt(0).requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_PAGE_DOWN: + if (handleKeyEvent) { + // Select the first icon on the next page, or the last icon on this page + // if there is no next page + if (pageIndex < (pageCount - 1)) { + newParent = getAppsCustomizePage(container, pageIndex + 1); + if (newParent != null) { + container.snapToPage(pageIndex + 1); + child = newParent.getChildAt(0); + if (child != null) child.requestFocus(); + } + } else { + itemContainer.getChildAt(itemCount - 1).requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_MOVE_HOME: + if (handleKeyEvent) { + // Select the first icon on this page + itemContainer.getChildAt(0).requestFocus(); + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_MOVE_END: + if (handleKeyEvent) { + // Select the last icon on this page + itemContainer.getChildAt(itemCount - 1).requestFocus(); + } + wasHandled = true; + break; + default: break; + } + return wasHandled; + } + + /** + * Handles key events in the tab widget. + */ + static boolean handleTabKeyEvent(AccessibleTabView v, int keyCode, KeyEvent e) { + if (!LauncherApplication.isScreenLarge()) return false; + + final FocusOnlyTabWidget parent = (FocusOnlyTabWidget) v.getParent(); + final TabHost tabHost = findTabHostParent(parent); + final ViewGroup contents = tabHost.getTabContentView(); + final int tabCount = parent.getTabCount(); + final int tabIndex = parent.getChildTabIndex(v); + + final int action = e.getAction(); + final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP); + boolean wasHandled = false; + switch (keyCode) { + case KeyEvent.KEYCODE_DPAD_LEFT: + if (handleKeyEvent) { + // Select the previous tab + if (tabIndex > 0) { + parent.getChildTabViewAt(tabIndex - 1).requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_RIGHT: + if (handleKeyEvent) { + // Select the next tab, or if the last tab has a focus right id, select that + if (tabIndex < (tabCount - 1)) { + parent.getChildTabViewAt(tabIndex + 1).requestFocus(); + } else { + if (v.getNextFocusRightId() != View.NO_ID) { + tabHost.findViewById(v.getNextFocusRightId()).requestFocus(); + } + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_UP: + // Do nothing + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_DOWN: + if (handleKeyEvent) { + // Select the content view + contents.requestFocus(); + } + wasHandled = true; + break; + default: break; + } + return wasHandled; + } + + /** + * Handles key events in the workspace hotseat (bottom of the screen). + */ + static boolean handleHotseatButtonKeyEvent(View v, int keyCode, KeyEvent e, int orientation) { + final ViewGroup parent = (ViewGroup) v.getParent(); + final ViewGroup launcher = (ViewGroup) parent.getParent(); + final Workspace workspace = (Workspace) launcher.findViewById(R.id.workspace); + final int buttonIndex = parent.indexOfChild(v); + final int buttonCount = parent.getChildCount(); + final int pageIndex = workspace.getCurrentPage(); + + // NOTE: currently we don't special case for the phone UI in different + // orientations, even though the hotseat is on the side in landscape mode. This + // is to ensure that accessibility consistency is maintained across rotations. + + final int action = e.getAction(); + final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP); + boolean wasHandled = false; + switch (keyCode) { + case KeyEvent.KEYCODE_DPAD_LEFT: + if (handleKeyEvent) { + // Select the previous button, otherwise snap to the previous page + if (buttonIndex > 0) { + parent.getChildAt(buttonIndex - 1).requestFocus(); + } else { + workspace.snapToPage(pageIndex - 1); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_RIGHT: + if (handleKeyEvent) { + // Select the next button, otherwise snap to the next page + if (buttonIndex < (buttonCount - 1)) { + parent.getChildAt(buttonIndex + 1).requestFocus(); + } else { + workspace.snapToPage(pageIndex + 1); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_UP: + if (handleKeyEvent) { + // Select the first bubble text view in the current page of the workspace + final CellLayout layout = (CellLayout) workspace.getChildAt(pageIndex); + final ShortcutAndWidgetContainer children = layout.getShortcutsAndWidgets(); + final View newIcon = getIconInDirection(layout, children, -1, 1); + if (newIcon != null) { + newIcon.requestFocus(); + } else { + workspace.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_DOWN: + // Do nothing + wasHandled = true; + break; + default: break; + } + return wasHandled; + } + + /** + * Private helper method to get the CellLayoutChildren given a CellLayout index. + */ + private static ShortcutAndWidgetContainer getCellLayoutChildrenForIndex( + ViewGroup container, int i) { + ViewGroup parent = (ViewGroup) container.getChildAt(i); + return (ShortcutAndWidgetContainer) parent.getChildAt(0); + } + + /** + * Private helper method to sort all the CellLayout children in order of their (x,y) spatially + * from top left to bottom right. + */ + private static ArrayList<View> getCellLayoutChildrenSortedSpatially(CellLayout layout, + ViewGroup parent) { + // First we order each the CellLayout children by their x,y coordinates + final int cellCountX = layout.getCountX(); + final int count = parent.getChildCount(); + ArrayList<View> views = new ArrayList<View>(); + for (int j = 0; j < count; ++j) { + views.add(parent.getChildAt(j)); + } + Collections.sort(views, new Comparator<View>() { + @Override + public int compare(View lhs, View rhs) { + CellLayout.LayoutParams llp = (CellLayout.LayoutParams) lhs.getLayoutParams(); + CellLayout.LayoutParams rlp = (CellLayout.LayoutParams) rhs.getLayoutParams(); + int lvIndex = (llp.cellY * cellCountX) + llp.cellX; + int rvIndex = (rlp.cellY * cellCountX) + rlp.cellX; + return lvIndex - rvIndex; + } + }); + return views; + } + /** + * Private helper method to find the index of the next BubbleTextView or FolderIcon in the + * direction delta. + * + * @param delta either -1 or 1 depending on the direction we want to search + */ + private static View findIndexOfIcon(ArrayList<View> views, int i, int delta) { + // Then we find the next BubbleTextView offset by delta from i + final int count = views.size(); + int newI = i + delta; + while (0 <= newI && newI < count) { + View newV = views.get(newI); + if (newV instanceof BubbleTextView || newV instanceof FolderIcon) { + return newV; + } + newI += delta; + } + return null; + } + private static View getIconInDirection(CellLayout layout, ViewGroup parent, int i, + int delta) { + final ArrayList<View> views = getCellLayoutChildrenSortedSpatially(layout, parent); + return findIndexOfIcon(views, i, delta); + } + private static View getIconInDirection(CellLayout layout, ViewGroup parent, View v, + int delta) { + final ArrayList<View> views = getCellLayoutChildrenSortedSpatially(layout, parent); + return findIndexOfIcon(views, views.indexOf(v), delta); + } + /** + * Private helper method to find the next closest BubbleTextView or FolderIcon in the direction + * delta on the next line. + * + * @param delta either -1 or 1 depending on the line and direction we want to search + */ + private static View getClosestIconOnLine(CellLayout layout, ViewGroup parent, View v, + int lineDelta) { + final ArrayList<View> views = getCellLayoutChildrenSortedSpatially(layout, parent); + final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) v.getLayoutParams(); + final int cellCountY = layout.getCountY(); + final int row = lp.cellY; + final int newRow = row + lineDelta; + if (0 <= newRow && newRow < cellCountY) { + float closestDistance = Float.MAX_VALUE; + int closestIndex = -1; + int index = views.indexOf(v); + int endIndex = (lineDelta < 0) ? -1 : views.size(); + while (index != endIndex) { + View newV = views.get(index); + CellLayout.LayoutParams tmpLp = (CellLayout.LayoutParams) newV.getLayoutParams(); + boolean satisfiesRow = (lineDelta < 0) ? (tmpLp.cellY < row) : (tmpLp.cellY > row); + if (satisfiesRow && + (newV instanceof BubbleTextView || newV instanceof FolderIcon)) { + float tmpDistance = (float) Math.sqrt(Math.pow(tmpLp.cellX - lp.cellX, 2) + + Math.pow(tmpLp.cellY - lp.cellY, 2)); + if (tmpDistance < closestDistance) { + closestIndex = index; + closestDistance = tmpDistance; + } + } + if (index <= endIndex) { + ++index; + } else { + --index; + } + } + if (closestIndex > -1) { + return views.get(closestIndex); + } + } + return null; + } + + /** + * Handles key events in a Workspace containing. + */ + static boolean handleIconKeyEvent(View v, int keyCode, KeyEvent e) { + ShortcutAndWidgetContainer parent = (ShortcutAndWidgetContainer) v.getParent(); + final CellLayout layout = (CellLayout) parent.getParent(); + final Workspace workspace = (Workspace) layout.getParent(); + final ViewGroup launcher = (ViewGroup) workspace.getParent(); + final ViewGroup tabs = (ViewGroup) launcher.findViewById(R.id.qsb_bar); + final ViewGroup hotseat = (ViewGroup) launcher.findViewById(R.id.hotseat); + int pageIndex = workspace.indexOfChild(layout); + int pageCount = workspace.getChildCount(); + + final int action = e.getAction(); + final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP); + boolean wasHandled = false; + switch (keyCode) { + case KeyEvent.KEYCODE_DPAD_LEFT: + if (handleKeyEvent) { + // Select the previous icon or the last icon on the previous page if possible + View newIcon = getIconInDirection(layout, parent, v, -1); + if (newIcon != null) { + newIcon.requestFocus(); + } else { + if (pageIndex > 0) { + parent = getCellLayoutChildrenForIndex(workspace, pageIndex - 1); + newIcon = getIconInDirection(layout, parent, + parent.getChildCount(), -1); + if (newIcon != null) { + newIcon.requestFocus(); + } else { + // Snap to the previous page + workspace.snapToPage(pageIndex - 1); + } + } + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_RIGHT: + if (handleKeyEvent) { + // Select the next icon or the first icon on the next page if possible + View newIcon = getIconInDirection(layout, parent, v, 1); + if (newIcon != null) { + newIcon.requestFocus(); + } else { + if (pageIndex < (pageCount - 1)) { + parent = getCellLayoutChildrenForIndex(workspace, pageIndex + 1); + newIcon = getIconInDirection(layout, parent, -1, 1); + if (newIcon != null) { + newIcon.requestFocus(); + } else { + // Snap to the next page + workspace.snapToPage(pageIndex + 1); + } + } + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_UP: + if (handleKeyEvent) { + // Select the closest icon in the previous line, otherwise select the tab bar + View newIcon = getClosestIconOnLine(layout, parent, v, -1); + if (newIcon != null) { + newIcon.requestFocus(); + wasHandled = true; + } else { + tabs.requestFocus(); + } + } + break; + case KeyEvent.KEYCODE_DPAD_DOWN: + if (handleKeyEvent) { + // Select the closest icon in the next line, otherwise select the button bar + View newIcon = getClosestIconOnLine(layout, parent, v, 1); + if (newIcon != null) { + newIcon.requestFocus(); + wasHandled = true; + } else if (hotseat != null) { + hotseat.requestFocus(); + } + } + break; + case KeyEvent.KEYCODE_PAGE_UP: + if (handleKeyEvent) { + // Select the first icon on the previous page or the first icon on this page + // if there is no previous page + if (pageIndex > 0) { + parent = getCellLayoutChildrenForIndex(workspace, pageIndex - 1); + View newIcon = getIconInDirection(layout, parent, -1, 1); + if (newIcon != null) { + newIcon.requestFocus(); + } else { + // Snap to the previous page + workspace.snapToPage(pageIndex - 1); + } + } else { + View newIcon = getIconInDirection(layout, parent, -1, 1); + if (newIcon != null) { + newIcon.requestFocus(); + } + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_PAGE_DOWN: + if (handleKeyEvent) { + // Select the first icon on the next page or the last icon on this page + // if there is no previous page + if (pageIndex < (pageCount - 1)) { + parent = getCellLayoutChildrenForIndex(workspace, pageIndex + 1); + View newIcon = getIconInDirection(layout, parent, -1, 1); + if (newIcon != null) { + newIcon.requestFocus(); + } else { + // Snap to the next page + workspace.snapToPage(pageIndex + 1); + } + } else { + View newIcon = getIconInDirection(layout, parent, + parent.getChildCount(), -1); + if (newIcon != null) { + newIcon.requestFocus(); + } + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_MOVE_HOME: + if (handleKeyEvent) { + // Select the first icon on this page + View newIcon = getIconInDirection(layout, parent, -1, 1); + if (newIcon != null) { + newIcon.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_MOVE_END: + if (handleKeyEvent) { + // Select the last icon on this page + View newIcon = getIconInDirection(layout, parent, + parent.getChildCount(), -1); + if (newIcon != null) { + newIcon.requestFocus(); + } + } + wasHandled = true; + break; + default: break; + } + return wasHandled; + } + + /** + * Handles key events for items in a Folder. + */ + static boolean handleFolderKeyEvent(View v, int keyCode, KeyEvent e) { + ShortcutAndWidgetContainer parent = (ShortcutAndWidgetContainer) v.getParent(); + final CellLayout layout = (CellLayout) parent.getParent(); + final Folder folder = (Folder) layout.getParent(); + View title = folder.mFolderName; + + final int action = e.getAction(); + final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP); + boolean wasHandled = false; + switch (keyCode) { + case KeyEvent.KEYCODE_DPAD_LEFT: + if (handleKeyEvent) { + // Select the previous icon + View newIcon = getIconInDirection(layout, parent, v, -1); + if (newIcon != null) { + newIcon.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_RIGHT: + if (handleKeyEvent) { + // Select the next icon + View newIcon = getIconInDirection(layout, parent, v, 1); + if (newIcon != null) { + newIcon.requestFocus(); + } else { + title.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_UP: + if (handleKeyEvent) { + // Select the closest icon in the previous line + View newIcon = getClosestIconOnLine(layout, parent, v, -1); + if (newIcon != null) { + newIcon.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_DPAD_DOWN: + if (handleKeyEvent) { + // Select the closest icon in the next line + View newIcon = getClosestIconOnLine(layout, parent, v, 1); + if (newIcon != null) { + newIcon.requestFocus(); + } else { + title.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_MOVE_HOME: + if (handleKeyEvent) { + // Select the first icon on this page + View newIcon = getIconInDirection(layout, parent, -1, 1); + if (newIcon != null) { + newIcon.requestFocus(); + } + } + wasHandled = true; + break; + case KeyEvent.KEYCODE_MOVE_END: + if (handleKeyEvent) { + // Select the last icon on this page + View newIcon = getIconInDirection(layout, parent, + parent.getChildCount(), -1); + if (newIcon != null) { + newIcon.requestFocus(); + } + } + wasHandled = true; + break; + default: break; + } + return wasHandled; + } +} |